| H10 patent glazing | ||
| Barn Glass Group ltd | Patent glazing and rooflights | 020 8644 7444 |
| Cantifix | Patent Glazing | 020 8203 6203 |
| Duplus Domes | Patent Glazing | 0116 261 0710 |
| Durabuild | Patent Glazing | 024 7663 9696 |
| Lonsdale Metal Company Ltd | Patent glazing / glass roof glazing | 020 8801 4221 |
| Twinfix | Polycarbonate roof glazing | 01925 811311 |
| Vitral | Patent glazing | 01223 499 000 |
| Abacus Construction Index - for more UK and USA construction websites. | ||
| updated 16/10/07 | ||